The curtains lower the general light level and provide privacy by preventing people outside from seeing directly into the room. The tab heading allows you to hang the curtains directly on a curtain rod. http://www.ikea.com/jp/en/images/products/kungslilja-curtains-with-tie-backs-pair-assorted-colours__0395586_PE563012_S4.JPGKUNGSLILJA Curtains with tie-backs, 1 pair, grey/whitehttp://www.ikea.com/jp/en/catalog/products/80312903/803.129.03IKEA¥ 3,999